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Annotation of mstools/mfc/samples/minsvr/minitem.cpp, revision 1.1

1.1     ! root        1: // This is a part of the Microsoft Foundation Classes C++ library.
        !             2: // Copyright (C) 1992 Microsoft Corporation
        !             3: // All rights reserved.
        !             4: //
        !             5: // This source code is only intended as a supplement to the
        !             6: // Microsoft Foundation Classes Reference and Microsoft
        !             7: // QuickHelp documentation provided with the library.
        !             8: // See these sources for detailed information regarding the
        !             9: // Microsoft Foundation Classes product.
        !            10: 
        !            11: #include "minsvr.h"
        !            12: 
        !            13: /////////////////////////////////////////////////////////////////////////////
        !            14: 
        !            15: CMinItem::CMinItem()
        !            16: {
        !            17:        m_data = "example string";
        !            18: }
        !            19: 
        !            20: void CMinItem::Serialize(CArchive& ar)
        !            21: {
        !            22:        // Customize this to store real data
        !            23:        if (ar.IsStoring())
        !            24:        {
        !            25:                ar << m_data;
        !            26:        }
        !            27:        else
        !            28:        {
        !            29:                ar >> m_data;
        !            30:        }
        !            31: }
        !            32: 
        !            33: 
        !            34: OLESTATUS CMinItem::OnShow(BOOL /* bTakeFocus */)
        !            35: {
        !            36:        // make sure server is the topmost window
        !            37:        AfxGetApp()->m_pMainWnd->BringWindowToTop();
        !            38:        return OLE_OK;
        !            39: }
        !            40: 
        !            41: 
        !            42: BOOL CMinItem::OnGetTextData(CString& rStringReturn)
        !            43: {
        !            44:        rStringReturn = m_data;
        !            45:        return TRUE;
        !            46: }
        !            47: 
        !            48: /////////////////////////////////////////////////////////////////////////////
        !            49: // Simple dialog for changing the string
        !            50: 
        !            51: class CChangeDlg : public CModalDialog
        !            52: {
        !            53: protected:
        !            54:        CString&    m_rString;
        !            55: 
        !            56: public:
        !            57:        CChangeDlg(CString& rString)
        !            58:                : CModalDialog("ChangeDlg"), m_rString(rString)
        !            59:                        { }
        !            60: 
        !            61:        BOOL OnInitDialog();
        !            62:        void OnOK();
        !            63: };
        !            64: 
        !            65: BOOL CChangeDlg::OnInitDialog()
        !            66: {
        !            67:        GetDlgItem(IDC_EDIT1)->SetWindowText(m_rString);
        !            68:        return TRUE;
        !            69: };
        !            70: 
        !            71: void CChangeDlg::OnOK()
        !            72: {
        !            73:        GetDlgItem(IDC_EDIT1)->GetWindowText(m_rString);
        !            74:        EndDialog(IDOK);
        !            75: }
        !            76: 
        !            77: 
        !            78: BOOL CMinItem::PromptChangeString()
        !            79: {
        !            80:        CChangeDlg dlg(m_data);
        !            81:        return (dlg.DoModal() == IDOK);
        !            82: }
        !            83: 
        !            84: /////////////////////////////////////////////////////////////////////////////
        !            85: // Drawing items into bitmap or metafile
        !            86: 
        !            87: BOOL CMinItem::OnDraw(CMetaFileDC* pDC)
        !            88: {
        !            89:        ASSERT_VALID(pDC);
        !            90:        CSize textSize;
        !            91: 
        !            92:        // first calculate the text size in MM_TEXT units
        !            93:        {
        !            94:                CWindowDC screenDC(NULL);
        !            95:                textSize = screenDC.GetTextExtent(m_data, m_data.GetLength());
        !            96:        }
        !            97: 
        !            98:        // if you want the item to always be drawn in a specific mapping
        !            99:        //  mode set it here.
        !           100: 
        !           101:        // Otherwise the OLE DLLs will scale the metafile to fit the
        !           102:        //  client specified size.  Setting the viewport size/extent
        !           103:        //  determines the relative scale of everything.
        !           104: 
        !           105:        int cx = textSize.cx + 100;
        !           106:        int cy = (cx * 4) / 3;      // nice aspect ratio
        !           107:        TRACE("Item drawing size is %d x %d\n", cx, cy);
        !           108:        pDC->SetWindowExt(cx, cy);
        !           109: 
        !           110:        // Draw a shaded circle
        !           111:        pDC->SelectStockObject(LTGRAY_BRUSH);
        !           112:        pDC->Ellipse(0, 0, cx, cy);
        !           113: 
        !           114:        // draw the text in the middle (as best we can)
        !           115:        pDC->SetBkMode(TRANSPARENT);
        !           116:        pDC->TextOut((cx - textSize.cx) / 2, (cy - textSize.cy) / 2, m_data);
        !           117: 
        !           118:        return TRUE;
        !           119: }
        !           120: 
        !           121: /////////////////////////////////////////////////////////////////////////////

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